gistfile1.py

#!/usr/bin/env python

import sys
import argparse
import lzma


def compressor(infile, outfile):
    with lzma.open(outfile, 'w') as lzf:
        lzf.write(infile)


def main(argv):
    parser = argparse.ArgumentParser(
        prog='squish',
        description='''Compress a given file into LZMA package''',
        epilog='''SeaBIOS expects a certain kind of LZMA compressed file
                  to unpack. This tool ensures correct header information
                  is provided.''',
        usage='%(prog)s [options]')

    parser.add_argument('-i', '--inputfile', nargs='?',
                        type=argparse.FileType('r'),
                        default=sys.stdin, required=True,
                        help="file to be compressed")

    parser.add_argument('-o', '--outputfile', nargs='?',
                        type=argparse.FileType('w'),
                        default=sys.stdout,
                        help="compressed output name")
    args = parser.parse_args()
#    print(args.inputfile)
    compressor(args.inputfile, args.outputfile)

if __name__ == "__main__":
    main(sys.argv[1:])